Treatment of materials.



Eamonn B. PRICE, or Nnw Yonx, AND wILLiAi/r J. s'rnINLE, or nnmnuns'r naieirrs, NEW Yonx, essicNoias To numana REQENERATING COMPANY, A coaPonA'rroN or INDIANA.

TREATMENT OF MATERIALS,

Patented Jan. 2, 1917.

Application led april 24, 191.5. Serial No. 23,658.

To all 'whom it may concern: l

Be it known that we, RAYMOND B. PRICE and WILLLAM J. STEINLE, both citizens of the United States, and residents, respectively, of New York, county of New York, and State of New York, and Elmhurst Heights, county of Queens, State of New York, have invented certain new Aand useful Improvements in Treatment of Materials, of which the following is a full,

This invention relates to the treatment of materials, more particularlyrubber, rub' berlike or similar materials, and has for an object essentially exhausting, compacting, and giving final formation to the material, such treatment, so preparing the product for vulcanization that it may bey vulcanized without the usual wrappings or other supports and will not blow during vulcanization.

v The invention may be carried out in many different ways, and in one embodiment requires that the material being treated shall.

be subjected to the action'ot` a vacuum, and the exhausted material compacted* and fed in the nature of a surface coating upon a form partaking of the configuration of the desired article. For example, in the manufacture of hollow articles such as hose, inner tubes, and the like, the exhausted and compacted material may be fed as a coating upon a mandrel which travels at' substan-i tially the rate of discharge of the exhausted and compacted material. Subsequently the mandrel with the tube of material thereon may be put into a vulcanizer and the materiall vulcanized without wrapping the same with the invention is shown in the accompanying drawing in which- Y v longitudinal sectional view of the apparatus; Fig. 2 isa detail view of detail view of the Figure 1 is a 'this mechanism may out departin fabric which is the usual practice. An apparatus suitable for carrying out designatesa cyi'inari;

supports 11 at the ends of the rotating the feed-screw. The feed-screw v'a drive pulley 15 .fixed to the spindle for l terminates at its free end short of the,dis 1 charge end of thecasing vas shown, and may there be supported, as for instance, by av spider, if desired. The feed-screw diminishes in pitch toward its free end, whereby the material advancing upon the screw is crowded and thereby compacted ati the discharge end of the casing. The casing is provided at the intake end with a hopper 16 withinwhich is mounted a feeding means such as rollers'l?, a though' be varied at WLill, las forinstance, a feed-screw or other desined losi-` ositive tive feeding kmeans may be substitute or evenA this feeding meansvmay be. dispensed with altogether. Thecasing is provided at the discharge end with a die 18 which is formed centrallye with an opening 19 of a shape conforming to the configuration Aof the article to be formed, in the present' instance the opening having a ci impart a like configuration to the product. A.ma ndrel 20 coacts with the wall of the die .opening 19, informing the product, which in this instance is a-tube, the mandrel being received through a bore21 formed in the feed-screw 12. The speed at which the'l mandrel is fed through the feed-screw is preferably the same as the speed of the materialrdischaiged through the die opening, although the mandrel may be fed at any speed ratio relatively to the discharge of the material withfrom the spirit or sacrificing any of the a vantages of theinvention.

For exhausting entrapped fluids, gases and the like from thev material, the same is cfa vacuum through subjected to the action be located at any dea pipe 22 which may sired point in the casing, but in the resentembodiment is shown disposed near t e feedhopper whereby vthe material will be` most eectively acte upon by the vacuumjwhile still in its semi-divided condition, that' is,

cular wall to y -into and fed longitudinally before it becomes compacted by the diininpair of superposed feed rollers 23 which may be driven from any suitable source of powerl and are formed to receive therebetween vand push a mandrel forwardly through the bore of the feed-screw, a suitas at 27, so that after-the mandrel has left the machine, it will not drop down but will be supported Vby the next following inandrel untill the operator cuts the tube at theA end of the ejected mandrel and separates the f mandrels.

In practice, the exhausted compacted material is fed through the circular wall of the die opening and meeting the traveling cylindrical mandrel is caused .to surround and adhere tothe mandrel in the nature of a constantly elongating tube. The mandrel may be passed through the die opening any number vof times tobuild plies of the-material thereon, if desired. As aresult of the exhausting and compacting treatment, the tubeformed upon the mandrelwillbe compact, homogeneous, and substantially free-from entrapped `iuids, gases, voids and the like, such condition of the material rendering it incapable of blowing during cure. To coinplete Athe process, each mandrel with the tube of material thereon, is placed in a vulcanizer' and cured, preferably in open heat,

butl may be cured in any usual orpreferred v manner, and during cure is preferably not wrapped with muslin or othel` wrappings as is the usual practice. After cure the tubeis removed from the mandrel manually', by compressed air, o'r by other' usual or preferred ,p means.

It is not of course essential that the mandi'el be passed through the feed-screw, or

of exhausted, compacted material Y that the feed-screw even be hollow, since, as shown in Fig. 4, afeed-screw 28 withouta bore may be mounted within the asihg 29 and the mandrel 36 may be fed at a right angle to the axis of the feed-screw; as shbwn, the mandrel being fed through the discharge opening 3ll of the die 32 by the means illustrated in Fig. 1, or by any other desired means.'

Having described our invention, what We claim and desire to protect by Letters Patent is: 4

1. An apparatus for treating material embodying a easing, means' for feeding the' Ina-l terial into the casing, a form, a member in the discharge end of the casing having a discharge opening permitting of the passage of the form therethrough, the wall of said opening being spaced from the form all directions, means for feeding the form through the opening, means for exhausting the material, and a feed screw .in the casing v for feeding the exhausted material in con` tact with said Wall and the ,traveling form.

, 2. An apparatus for treating material einbodying a casing, a hollow feed-screw for advancmg the material in the casing,- afor-m receivable in the bore of the feed-screw, means for feeding the form through Said bore, a suction pipe' for exhausting the material, and a die at the discharge end of the p casing having an -openin permitting of the passage therethrough o the form with a coating of theexhau'sted material thereon.

3; An apparatus for` treating material einbodying a casi-ng, a feed-screw inthe cas'- ing; means for exhausting the material advancd by the feed-screw, a'maiidrel, means for moving the mandrel past the. feedfscrew,

and a die at the delivery endof the. casing having an opening for permitting assage therethrough of the mandrelV wit a surface coating of the compacted exhausted material thereon.

Signed atNew York, N. Y;, this 16 day of Apil,1915.

.. .RAYMND B. PRICE.

Signed at New York,- N. Y., this 21st day oflhpril,19l5;

- WILL'AM J. STElNlLE. 

